| Author | Message | ||
| Gary Stadler (Boogiethecat)
Rating: N/A |
I'm looking at all the info I can find, but I can't find a simple document that explains what the differences are between all of the 600 series allison transmissions. In particular I'm interested in the differences between a 643 and a 644, and a 654, as I have to get something pretty soon to stick behind a cummins 5.9 and don't know why I should look for one vs another... Anyone care to make it simple for stupid ol' me? Thanks!!! | ||
| Ken Turner (Pipesusmc)
Rating: N/A |
http://www.google.com/search?sourceid=navclient&ie=UTF-8&rls=GGLG,GGLG:2006-04,GGLG:en&q=6 00+series+allison+transmissions%2E | ||
| JW Smythe (Jwsmythe)
Rating: N/A |
You can shorten Google URL's down to just the q=[something] part. It makes them easier to read and/or copy&paste http://www.google.com/search?q=600+series+allison+transmissions | ||
| Gary Stadler (Boogiethecat)
Rating: N/A |
Yeah yeah, Come-on guys, give me a break... believe it or not, I actually know how to use Google. Click on your own links above and then please tell me how that answers my question? Not..... Sorry if I sound sassy but I've been in Google for about two hours prior to giving up and asking the question on the board. All you get is page after page of companies wanting to sell you parts, sales stuff, and garbage. So.... Anyone have an actual, factual answer for me? | ||
| Stan Rating: N/A |
Gary: Try an Allison dealer. At one time they had a litle brochure for each series of transmission. Not much info in it but all the basics that you are looking for. Sorry, but mine has disappeared. | ||
| dick egler (Dickegler)
Rating: N/A |
Hey Gary, The short answer is the 644 has 4 forward speeds, and the654 has 5. I believe both enjoy the lockup torque converter. The 654 has one additional planetary at the rear,adding7 inches or so to the overall length. I'm not really familar with the 643, but I would guess the output shaft is different, maybe to facilitate emergency brake of some kind, or a slip yoke type driveshaft. I used a 654 behind 8v71 and got along well with the combination. Hope that helps Dick Egler | ||
| Gary Stadler (Boogiethecat)
Rating: N/A |
Ok, Tony emailed me what I was looking for. THANK YOU!! In short I'll post here what i was looking for: AT Series AT 540 235 hp 4spd no lockup 385 ft# torque 27.22" long, 20.72" wide, 18.9" tall, 275 lbs. SAE3 bellhousing MT 643 250 hp 4spd+ lockup 585 ft# torque 30.70" long, 19.25" wide, 21.6" tall 510 lbs. MT 653 same as 643 but 5 speeds instead of 4 +lockup, 36.23" long, 19.25" wide, 21.6" tall, and 540 lbs. MT 644 300 hp 4spd +lockup 780ft# torque 30.42" long, 19.25" wide, 21.6" tall, 565 lbs. MT 654CR 300 hp same as 644 but 5 speeds +lockup 950 ft# torque 36.23" long, 19.25" wide, 21.6" tall, 625 lbs. And all are SAE2 except the 500 series which are SAE3 And for the most part, the ones with 5 speeds have a NASTY low gear, something like 8:1 in case you want to tow elephants out of holes... Last I found, talking to Arizona transmission: the 644/654 torque converter is VERY big, too big to fit behind my 5.9. So it looks like the 643 is the one I need!!! It's starting to make sense.... Thanks guys!! This makes it a LOT easier to make a choice...  | ||
| Richard Bowyer (Drivingmisslazy)
Rating: N/A |
Gary, who are you talking to at Arizona Transmission? Is this the company near the Tuscon airport? Richard | ||
| Donald Lee Schwanke (Dontx)
Rating: N/A |
Does anybody have overdrive information on these? | ||
| Gary Stadler (Boogiethecat)
Rating: N/A |
Richard, http://www.aztranny.com/pricing.htm They sounded like they knew what they were talking about, and it might make sense being the 644's are 950ft#... Don, To date I havn't found any of these series with overdrive. I don't think they exist. | ||
| Richard Bowyer (Drivingmisslazy)
Rating: N/A |
I really got screwed by a company with a similiar name, which I unfortunately can not remember. I know they were just a few blocks from the airport. Took the bus in to change out from a 6V to an 8V with an estimate of $8,000. Ended up costing me over $25,000 to get it out of there. Richard | ||
| Brian Elfert
Rating: N/A |
I think at one point I found some info on the MT643 From Allison. It does not have overdrive. The final gear ratio is 1:1. I would look for a B300 or B300R if you want overdrive. Ron the Bus Nut has a new B300R for $6800. Brian Elfert | ||
| Mike (Busone)
Rating: N/A |
Anybody know if the MT643 can handle 300HP? I know it is rated for 250 but I know a lot of RTS owners are running v730s at 350. | ||
| Matt P. Rating: N/A |
I replaced my at540 with an allison 1000 5 speed with overdrive. Very nice tranny that is fairly cheap because they are used in high volume in pickup trucks. This is way superior in shift quality, economy, and performance. I had a 190hp 5.9 and put in a 300hp 5.9l with the 1000 tranny. It worked great until the gears blew out of my rear end from to much torque. I got a surplus heavy axel and now it works great and runs like a bear in the woods. I have 4.63 rear ratio that pulls great thru 4th gear and then I hit .71 overdrive and at 2750 rpm I am close to 85mph. It was a lot of work but I love the way it turned out. Drives like a pickup instead of a bus. | ||
| Rob King
Rating: N/A |
Hi Gary Here is another link that has a ton of information, some maybe helpful http://www.tpub.com/content/firetrucksandequipment/TM-5-4210-227-24P-3/ Rob 91 LeMirage XL Missouri | ||
| Donald Lee Schwanke (Dontx)
Rating: N/A |
Wow Matt, that 1000 is one I was not aware of, and seems perfect for a Cummins 5.9 I have been looking for a tranny to substitute for a 545. What is it normally found in? Weighs far less than a 545 and can take lots more HP/torque too. I like it already! | ||
| Brian Elfert
Rating: N/A |
Be sure the Allison 1000 you get will mate with your bell housing. Pickup truck engines don't generally have SAE bell housings. The 2006 Allison 1000 has 6 speeds with two overdrives. There are rumors the Duramax engine has to defuel when shifting to avoid destroying the Allison 1000 tranny. Brian Elfert |